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Finding the Fourth Proportional to 565,521.78, 780,467.49 and 310,920.96

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Solution

The fourth proportional to 565,521.78, 780,467.49 and 310,920.96 is: 429,097.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,521.78 : 780,467.49 = 310,920.96 : x
  2. Step 2: Convert to fraction form
    565,521.78/780,467.49 = 310,920.96/x
  3. Step 3: Cross multiply
    565,521.78x = 780,467.49 × 310,920.96
  4. Step 4: Simplify right side
    565,521.78x = 242,663,701,239.59
  5. Step 5: Solve for x
    x = 242,663,701,239.59/565,521.78
  6. Step 6: Final answer
    x = 429,097.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.